I say it will have the opposite effect.
I say, once the legalization of drugs supports the libertarian talking points, people will make the change. Now, if the libertarian platform was a one trick pony then maybe the OP might be onto something but, the libertarian platform has many issues to resolve.
'The whole universe is going to die!'
No because ending the Drug war is a part of the bigger plank of personal liberty.
Jackboots always come in matched pairs, a left boot and a right boot.